The average weight of 15 men is decreased by 2 kg when one of them whose weight is 70 kg is replaced by a new man. What is the weight of the new man?15 व्यक्तियों का औसत वजन, उनमें से 70 किग्रा वजन के एक व्यक्ति को एक नये व्यक्ति द्वारा प्रतिस्थापित करने पर 2 किग्रा घट जाता है। तो नये व्यक्ति का वजन कितना होगा?
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Correct answer: D. 40
Explanation
A fall of 2 kg in the average of 15 men means the total weight falls by 15 × 2 = 30 kg. Since only one man was replaced, the new man is 30 kg lighter than the man who left: 70 − 30 = 40 kg.15 व्यक्तियों के औसत में 2 किग्रा की कमी का अर्थ है कुल वजन में 15 × 2 = 30 किग्रा की कमी। चूँकि केवल एक व्यक्ति बदला गया है, नया व्यक्ति जाने वाले व्यक्ति से 30 किग्रा हल्का है: 70 − 30 = 40 किग्रा।More Mathematical Reasoning and Aptitude questions
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